- #1
eazyduzit
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Got a question for you mechanics enthusiasts out there. Here https://i.imgur.com/Px0Hakg.jpg from what I gather is a basic force diagram depicting a car accelerating along a straight road, Dr represents the driving force of the engine, Fr the friction acting on the tyres against the direction of motion, Nr the normal reaction of the car to the road and W the weight of the car. I have to find the coefficient of friction of the tyres to the road and I'm guessing if I find the value for friction I can then use the formula to solve the coefficient value.My question is in what direction would the frictional force be acting on the car if it were decelerating under a braking force, my common sense would tell me it would be opposite to the braking force but I can't be sure.
I'm talking about something that would look like this https://i.imgur.com/DU42tTp.jpg with Br representing the braking force.
Here https://i.imgur.com/nOoNHWf.jpg is a link to the original question text for anyone wondering.
I'm talking about something that would look like this https://i.imgur.com/DU42tTp.jpg with Br representing the braking force.
Here https://i.imgur.com/nOoNHWf.jpg is a link to the original question text for anyone wondering.